I'm a university student and have some experience with GIS but not loads. For my dissertation I am measuring beach profiles, using a dumpy level surveying technique, of some nesting habitats for the hawksbill sea turtle in order to determine how they will be affected by future changes in sea level.
How do I change data that is currently in the form in the picture (aka, point 2.2 is 10.5 meters along the beach and 5 meters up a transect, with height 0.669m above mean sea level) into an x y z coordinate system that will be usable in a GIS program to create a triangulated irregular network?
I have a GPS measurement for the start point of my profiling.
For an example of what I am trying to do see Fish et al. 2005, Predicting the Impact of Sea-Level Rise on Caribbean Sea Turtle Nesting Habitat. Conservation Biology Vol. 19 (pp, 482-491).